South korean spree killer, mass murderer and off-duty police officer who got drunk and killed 57 people with rifles and hand grenades, injured a further 38, before blowing himself up with one of his hand grenades on april 27, 1982.

Born February 24th, 1955 in Busan.

Died April 28th, 1982 at 27 years old in Uiryeong County (hand grenade).